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Finding the Fourth Proportional to 6,397.20, 8,826.60 and 3,602.70

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Solution

The fourth proportional to 6,397.20, 8,826.60 and 3,602.70 is: 4,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.20 : 8,826.60 = 3,602.70 : x
  2. Step 2: Convert to fraction form
    6,397.20/8,826.60 = 3,602.70/x
  3. Step 3: Cross multiply
    6,397.20x = 8,826.60 × 3,602.70
  4. Step 4: Simplify right side
    6,397.20x = 31,799,591.82
  5. Step 5: Solve for x
    x = 31,799,591.82/6,397.20
  6. Step 6: Final answer
    x = 4,970.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.